See the Drag/drop of the pivot grid 'Data' field does not allow dropping as expected ticket for details.
Compact layout - Dragging row field headers can make the data field anchor precede them
Answers approved by DevExpress Support
We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.
Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.